Granted Patent
Utility
US 6,690,109 · App. 10/214,259
Organic electroluminescence element and manufacturing method thereof
Inventor:
Takumu Tada
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Aug 8, 2002
Inventor
Takumu Tada
Assignee (at issue)
Victor Company of Japan, Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.